This Avantco 17818853 door bushing is a direct replacement for the one that came with your unit. It is a vital part of your unit's door assembly, working to create a firm door seal and keep the cabinet set to the right temperature. A broken or malfunctioning door hinge can prevent your unit from maintaining specifications and cause strain on other components, so be sure to replace it promptly. It's compatible with select Avantco units.